Grand Canyon
The Type of Rocks
Vocab
Fossils
Time Scales/Time Lines
100
The age of the Grand Canyon
What is 10,000,000 million years old?
100
The type of rock created by molten rock that cools and hardens.
What is igneous?
100
The occurancy of when this type of erosion erodes through layers of rocks creating landforms giving the shape of steps or cliffs.
What is differential erosion?
100
A trace or an imprint left behind from a plant or an animal embedded into a rock, and preserved in a rock.
What is fossil?
100
The longest era of Earth's History
What is precambrian?
200
This layer of rock indicates that there was once an ancient ocean covering the Grand Canyon.
What is limestone?
200
The type of rock that gets compacted and cemented together.
What is Sedimentary?
200
A rock layer that is made up of more than one type of rock.
What is Formation?
200
The type of rock to most likely contain fossils.
What is sedimentary?
200
We made one of these Time Lines in class on Earth's History, it was 4.5 meters long.
What is Geological Time Line?
300
The Colorado plateau spreads through these four states
What is Arizona, New Mexico, Utah, Colorado
300
The type of rock that gets created from heat and/or pressure.
What is Metamorphic?
300
the color of the powder left behind when the mineral is scraped across a surface.
What is streak?
300
Index fossils help these people by telling the age of the rock layers and about prehistoric enviornments.
What is geologists?
300
The Time Line that shows us about Earth's History using numbers and dates.
What is Numerical Time Line?
400
The river that eroded through the Grand Canyon.
What is the Colorado River
400
The type of rock particles determine.
What is color?
400
This occurs when a rock breaks with a smooth or flat surace.
What is Cleavage?
400
Fossils of organisms that lived for only a short ammount of time, but in m any places all around the world.
What is Index Fossils?
400
The type of time scale that tells about earth's history in proportions compared to all of Earth's history.
What is Proportional Time Scale?
500
This is the first explorer to go down into the Grand Canyon
What is John Wesley Powell?
500
A sedimentary rock that is named after a County in Arizona, it also has fine grains and is tan.
What is Coconino?
500
Forms in nature, is a solid, crystal structure, it is rough, and it is made up of chemicals.
What is mineral?
500
Actinocoelia is the type of fossil found in this formation, and it is found in limestone and sandstone.
What is Kaibab Formation?
500
This Time Line shows us Trilobites and when they appeared.It focuses on the life of animals and marine life more than rather the eras.
What is Geological Time Line?
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